There is no longer any question among those most competent to form an opinion on the subject, as to tuberculosis being a communicable, and to a great extent a preventable and curable disease. It is definitely known that only in the rarest instances is the disease as such inherited from the parent by the offspring, although a susceptibility or predisposition may be thus transmitted. Of the preventability of tuberculosis evidence will be found in the reduction in morbidity, and mortality effected wherever appropriate prophylactic measures have been instituted, apart from the knowledge that, being dependent on a palpable, tangible, finite cause, the control of this must necessarily inhibit the development of its effects. That tuberculosis is curable is established by the results of both clinical and pathologic observation, as exhibited in the large number of those restored to lives of health and usefulness, on the one hand; and to common